Directly above the reclined chair, taped at all four corners with the kind of clear tape that yellows before the poster does, hangs the one image in the building designed to be seen from a single fixed angle by someone who cannot easily look away: on their back, chin tilted up, mouth open, for however long the appointment runs. Nobody who works in the office looks at it more than once a year, generally when replacing it, since it sits entirely outside the sightline of anyone standing or sitting upright. The subject is almost always chosen for stillness rather than interest: a beach at low tide, a field, a mountain lake, something with no motion and no narrative, since a patient with a suction straw in one cheek has no attention left over for detail.
The tape fails first at the corners nearest the light fixture, where heat from the overhead lamp dries the adhesive faster, so most ceiling posters are re-taped at least once before they are replaced outright, small curls forming at the edges the way a photograph curls on a dashboard. Some offices rotate two or three posters through the same four strips of tape, swapping the mountain lake for the beach every few months on the theory that a patient seen twice a year will not remember which one they saw last time. Patients, asked directly, remember exactly which one they saw last time, and say so.